Steam-boiler furnace.



G. S. GALLAGHER. STEAM BOILER FURNACE. APPLICATION FILED AUG. 22, 1912.

Patented J an. 20, 1914.

M s M.

UNITED STATES PATENT OFFICE.

GEORGE S. GALLAGHER, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO HENRYGALLAGHER AND ONE-HALF T0 EMMA G. GALLAGHER, OF NEW YORK, N. Y.

STEAM-BOILER FURNACE.

Specification of Letters Patent.

Patented Jan. 20,1914.

Application filed August 22, 1912. Serial No. 716,356.

To all whom it may concern:

Be it known that I, GEORGE S. GALLAonnn, a citizen of the United States,residing in the borough of Manhattan, city, county, and State of NewYork, have invented a certain new and useful Improvement in Steam-Boiler Furnaces, of which the following is a specification.

My invention relates to improvements in steam boiler furnaces, andparticularly to the devices associated with and in proximity to the coaldoors, and the same is an improvement upon the devices shown anddescribed in my application for Letters Patent, Serial No. 577,006,filed August 18,1910.

In contra-distinction to the features of my said application, the objectof my present invention is to facilitate and lessen the cost ofmanufacture of the parts of the jamb block and center pier block andtheir tile faces, to facilitate the placing of the tile faces andincrease the circulation and discharge of the air in relation thereto.

In carrying out my invention, the cast metal frames or bodies of thejamb blocks and center pier are secured to the front furnace wall inabout the same manner as in my aforesaid application, but said frames orbodies are perforated at right angles to the planes of their faces, andthe backs of the tile faces and the edges are provided with a pluralityof grooves. The surface grooves, when the tiles are in position,coincide with the perforations in the cast metal frames or bodies andthe edge grooves provide air discharge apertures, whereby a circulationof air is established. The tile faces are held to the cast frames orbodies by bolts, all of which is hereinafter more particularlydescribed.

In the drawing, Figure 1 is a sectional plan through a portion of thefront of a steam boiler furnace at the coal door, illustrating thedevice of my invention. Fig. 2 is a perspective view of the center pierblock or body, with the tile face or nosing in position in relationtherewith. Fig. 3 is an elevation of the inner or back surface of thistile or nosing, and Fig. 4 is an elevation of the jamb block frames orbodies.

Similar letters and numerals of reference indicate the same parts in allthe figures.

a represents the front metal plate of the furnace, which is providedwith an opening constituting the entrance for coal, and a is the coaldoor closing said opening. a represent holes in this front metal plate,providing for the entrance of air.

Z) is the base or dead plate of the coal door of the furnace, and beyondwhich are the ends of the grate bars 0 adjacentto the plate b.

In Fig. 1 of the drawing, I have only shown the center pier frame orbody and one end jamb block, as this is apparently all that is necessaryto illustrate the invention, the other end being similarly constructed.

(Z, at one end, represents one 'jamb block frame or body, which is ofcast metal, pro vided with one or more lugs (l and advantageously withupper and lower or end webs (Z which act as braces. As placed accordingto the illustration Fig. 1, it will be noticed that the right hand endof this jamb block is inserted in the wall of the furnace and the lefthand end secured at the lug (Z by bolts 2, hence the holes a in thefront wall a permit access of air between the front plate a and the jambblock (Z. This jamb block is made of several angles to fit the corner,and the same is perforated or provided with a plurality of holes 3, andalso with bayonet slots 6 at about the center of each face for thepurpose hereinafter described.

0 represents the center pier or spacing frame or body of flattenedU-configuration and provided with lugs 6 adapted to come against theinner face of the front plate a, and these lugs are provided withthreaded holes to receive other bolts 2, by which this center frameplate or body is secured to the front plate a of the furnace. Thiscenter pier is provided with a plurality of holes 6 in the side portionsand in the front portion, as shown in Figs. 1 and 2.

f represents the tile faces of the jamb block frames (1. These areshaped to conform to the contour of the jamb block frames, and areprovided with a plurality of horizontal grooves f in their inner faces,and edge grooves f which aline with the grooves f and the grooves fcoincide with the holes 3 of the jamb block frames,thus air that findsentrance between the jamb block frame, the front wall and the furnacewall, readily finds exit into the combustion chamber of the furnacethrough the holes 3 into the grooves f and by the grooves f into thecombustion chamber, or in other words, there is a circulation of airestablished in this way from outside of the furnace, or from below thegrate door, as shown in my aforesaid patent, within the jamb blockframes, and by the device of the present invention, therefrom into thecombustion chamber.

I prefer to connect the tile faces f to the jamb block frame 03 bybolts, and for this purpose, preferably make recesses 4 in the faces ofthe tile members f, and holes through the same at these recesses, andemploy bolts 5, which pass through the holes with the heads of thebolt-s in the recesses and with the stems of the bolts passing throughthe bayonet slots 6 in the jamb block frames, and the nuts of the boltsbehind, or in other words, within the boundary of the jamb block frame.After the bolts are in place and are tightened up by any convenientdevice employed therefor, the recesses 4, in the tile faces f, are to befilled up with fire clay.

. In connection with the center pier frame 6, I have shown and prefer toemploy a tile nosing h with a rounded end and flat back to rest againstthe projecting face of the center pier frame 6, and in the device of mypresent invention, I have dispensed with the side tile faces of thecenter pier, which I have shown in my aforesaid application. The tilenosing h is grooved on the back, both horizontally and vertically, thehorizontal grooves k coinciding with the holes 6 of the center pierframe, and the vertical grooves 71. crossing the same and alsocorresponding with a vertical line of the holes 6 In order to connectthe tile nosing h in position against the end of the center pier frame6, I prefer to employ an angular shaped bolt 71, and to form a groove 7,in the upper surface of this tile nosing h, and in the upper edge of thecenter pier frame 6, and at-the end of the groove 7, in the tile nosing,a vertical hole, or in other words, a hole at right angles to the groovewhich receives the end of the bolt opposite to the threaded end whichreceives the nut. Fig. 1 shows the position of this bolt member, wherethe same lies in the groove 7 with the shorter end in the hole, in thetile nosing, and the stem of the bolt as extending forward and passingthrough the front plate a with the nut coming outside of the plate awhere the same is accessible for the manipulation of the bolt. This boltkeeps the tile nosing in position, particularly in view of the fact thatthere can be no vertical movement as between the base plate I) and thecenter of the usual arch plate or rigid mem her which supports thefurnace wall. To replace the tile nosing, when damaged or burned out,with a new one, it is an exceedingly easy matter to remove the exposednut of this bolt '5 and pull away the tile nosing from the center pierframe with the bolt and in the inverse order to connect the parts inposition. 1

The construction of the center pier frame 6 and the tile nosing itprovides for a circulation of air and an escape of air into thecombustion chamber, very similar to that explained in connection withthe jamb block and the tile faces thereof, because the holes 6 providefor an exit of air from within the center pier frame, not only directlybut into the vertical grooves 71 and horizontal grooves ]L2 of the tilenosing and the escape of the air therefrom at the edges of the tilenosing, as shown in Fig. 2. This circulation of air not only affords thesurplus air required in the combustion chamber for the proper combustionof the fuel but also assists in coolingthe tile faces and the metalparts back of the same.

I have shown in Figs. 1, 2 and 3, and prefer to employ the verticallydisposed angular rib 8 formed with and centrally of the cent-er pierframe or spacing bar 6 projecting from the end thereof, and. I providethe tile nosing with a vertically disposed center groove 9, as shownparticularly in Fig. 3, by which it is adapted to set over this rib. Bythis device, the tile nosing may at once be accurately brought toposition and any lateral motion prevented, because between the top andbottom plates of the furnace at the coal doors, this rib and groove, andthe bolt 2', the entire nosing is held most securely in position.

I claim as my invention:

1. In a steam boiler furnace, a hollow metal block, means formedtherewith for connecting the same in position in the walls of a furnace,the walls of the block being provided with a plurality of apertures, andfire brick tiles forming faces for the sides of the block, the innerfaces of the said fire brick tiles being provided with grooves soarranged as to lie in line with the perforations in the walls of theblock, the said fire brick tiles being also provided with edge groovescommunicating with the aforesaid face grooves so as to provide passagesfor the circulation of air from within the said block to the combustionchamber of the furnace.

2. In a steam boiler furnace, a hollow metal block, means formedtherewith for connecting the same in position in the walls of a furnace,the walls of the block being provided with a plurality of apertures,fire brick tiles forming faces for the sides of the block, the innerfaces of the said fire brick tiles being provided with grooves soarranged as to lie in line with the perforations in the walls of theblock, the said fire brick tiles being also provided with edge groovescommunicating with the aforesaid face grooves so as to provide passagesfor the circulation of air from within the said block to the combustionchamber of the furnace, and means for removably securing the said firebrick tiles in position against the faces of the said block.

3. In a steam boiler furnace, a spacing or center pier block adapted tobe built in the front wall of the furnace between the coal doors, andmeans formed therewith for connecting the same to the front wall, saidspacing or center pier block formed hollow and provided with a pluralityof perforations on the sides and end, and a tile nosing adapted to fitagainst and project from the end of the spacing or center pier blockinto the combustion chamber, and said tile nosing provided on its backface with a plurality of horizontally and vertically disposed grooves tocome to the edges or margins of the said tile nosing and co-incide withthe perforations in the spacing or center pier block.

4. In a steam boiler furnace, a spacing or center pier block adapted tobe built in the front wall of the furnace between the coal doors, andmeans formed therewith for connecting the same to the front wall, saidspacing or center pier block formed hollow and provided with a pluralityof perforations on the sides and end, and a tile nosing adapted to fitagainst and project from the end of the spacing or center pier blockinto the combustion chamber, and said tile nosing provided on its backface with a plurality of horizontally and vertically disposed grooves tocome to the edges or margins of the said tile nosing and co-incide withthe perforations in the spacing or center pier front wall of the furnacebetween the coal doors, and means formed therewith for connecting thesame to the front wall, said spacing or center pier block formed hollowand provided with a plurality of perforations on the sides and end, anda tile nosing adapted to fit against and project from the end of thespacing or center pier block into the combustion chamber, and said tilenosing provided on its back face with a plurality of horizontally andvertically disposed 'rooves to come to the edges or margins of the saidtile nosing and co-incide with the perforations in the spacing or centerpier block, and the forward portion of the said center pier or spacingblock provided with a projecting rib, and the back portion of the tilenosing with a vertical groove fitting said rib, whereby the said tilenosing is brought at once to position with reference to the center pieror spacing block, and lateral motion is prevented.

Signed by me this 22nd day of July, 1912.

GEORGE S. GALLAGHER. WVitnesses:

BERTHA M. ALLEN, J. B. Ln BLANC.

Copies of this patent may he obtained for five cents each, by addressingthe Commissioner or Patents, Washington, D. O."

